Question

If 2x = sec A and = tan A, then the value of 2 (22) is -​

Answer 1

Answer:

C

4

1

​

 

Usiong sec  

2

θ−tan  

2

θ=1

⇒(2x)  

2

−(  

x

2

​

)  

2

=1, substitute the given values in terms of x

⇒4x  

2

−  

x  

2

 

4

​

=1

⇒4(x  

2

−  

x  

2

 

1

​

)=1

⇒x  

2

−  

x  

2

 

1

​

=  

4

1

​So it help you